XML 25 R17.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2011
Fair Value Measurements (Tables) [Abstract]  
Fair Value, by Balance Sheet Grouping [Table Text Block]
Assets (Liabilities) Measured at Fair Value on a Recurring Basis
(in millions)
June 30, 2011
Level 1
Level 2
Level 3
Cash equivalents
$
2,612


$
2,612


$
—


$
—


Short-term investments
967


967


—


—


Restricted cash equivalents and short-term investments
469


469


—


—


Long-term investments
136


—


27


109


Hedge derivatives, net
 
 
 
 
Fuel derivatives
135


—


135


—


Interest rate derivatives
(68
)
—


(68
)
—


Foreign currency derivatives
(70
)
—


(70
)
—


(in millions)
December 31, 2010
Level 1
Level 2
Level 3
Cash equivalents
$
2,696


$
2,696


$
—


$
—


Short-term investments
718


718


—


—


Restricted cash equivalents and short-term investments
440


440


—


—


Long-term investments
144


—


25


119


Hedge derivatives, net
 
 
 
 
Fuel derivatives
351


—


351


—


Interest rate derivatives
(74
)
—


(74
)
—


Foreign currency derivatives
(96
)
—


(96
)
—
Fair Value of Debt
Fair Value of Debt


Market risk associated with our fixed and variable rate long-term debt relates to the potential reduction in fair value and negative impact to future earnings, respectively, from an increase in interest rates. In the table below, the aggregate fair value of debt was based primarily on reported market values, recently completed market transactions and estimates based on interest rates, maturities, credit risk and underlying collateral.
(in millions)
June 30,

2011
December 31,

2010
Total debt at par value
$
14,739


$
15,442


Unamortized discount, net
(847
)
(935
)
Net carrying amount
$
13,892


$
14,507


Fair value
$
14,700


$
15,400